.div1 {
  width: 200px;
  height: 100px;
  background-color: red;
  border: pink 10px solid;
}

.div2 {
  width: 200px;
  height: 100px;
  background-color: blue;
  display: flex;
  justify-content: center;
  align-items: center;
}

.div2 .div3 {
  width: 50px;
  height: 50px;
  background-color: green;
}

.div3 {
  width: 200px;
  height: 100px;
  background-color: black;
}

.font1 {
  color: pink;
}

.font2 {
  color: green;
  font-size: 60px;
}
